A device for growing intraocular lens by pulling method

Abstract

The invention relates to a czochralski method intraocular lens growing device. The czochralski method intraocular lens growing device comprises a furnace body, a lens lifting mechanism, a lens rotating device and a lifting platform connected to the lens lifting mechanism as well as a double-bracing structure, wherein the double-bracing structure comprises a weighing reversing plate, a weighing supporting seat and a weighing sensor, the weighing supporting seat and the weighing sensor are arranged on the lifting platform at the same height, are located below the weighing reversing plate and are symmetrically connected to the two ends of the weighing reversing plate so as to form two supporting points of the weighing reversing plate, the lens rotating device is arranged above the weighing reversing plate, and the center of gravity of the lens rotating device is located in the center of the weighing reversing plate. The czochralski method intraocular lens growing device has the advantages that by adopting the double-bracing structure, the contradiction between the measuring range and the accuracy of the weighing sensor is effectively balanced on the premise of ensuring the bracing, and the lens rotating-lens lifting movement is realized while the high-accuracy weighing is realized.

Description

technical field [0001] The invention relates to a device for artificially growing crystals, in particular to a device for growing artificial crystals by pulling method. Background technique [0002] Due to the large number of applications of crystal materials at home and abroad, especially laser crystal materials, the domestic crystal growth equipment market, especially the demand for crystal growth equipment by pulling method is increasing day by day. At present, the manufacturing level of foreign growth equipment is very high, but the price is expensive. Some domestic colleges, enterprises, and scientific research institutions continue to introduce crystal growth equipment to meet market needs. Most of the existing equipment for crystal growth by pulling method adopts the down weighing method to control the crystal growth. This weighing method needs to apply the total mass of the molten crystal raw material (generally 3-5 times that of the crystal product), the crucible,...

AI Technical Summary

Problems solved by technology

This weighing method needs to apply the total mass of the molten crystal raw material (generally 3-5 times that of the crystal product), the crucible, and the lower weighing mechanism to the load cell at the initial stage of weighing, so that the weight acting on the weighing The sensor payload is very small, which in turn limits the method's application to the growth of large-diameter, large-scale crystals

To solve this problem, the floating scale method is often used to avoid invalid loads. However, the floating scale method is limited by its principle, and the weighing system is often complicated, bulky, and the accuracy is not high.

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